Chaie for railways



PAIENTED MAYSl, 1859.

J. 'F. PEABODY. CHAIR FOR RAILWAYS.

Inven or. I -W/ non.

JOHN F. PEABODY, or SALEM, MASSACHUSETTS.

CHAIR FOR RAILWAYS.

Specification of Letters Patent No. 24,234, dated May 81, 1859.

To all whom it may concern:

Be it known that I, J OHN F. PEABODY, of Salem, in the county of Essexand State of Massachusetts, have invented an Improvement in Chairs forRailways; and I do hereby declare that the same is fully described andrepresented in the following specification and the accompanyingdrawings, of which Figure 1 denotes a longitudinal section of a railwaychair and its two bearing rails with my improvement applied thereto.Fig. 2 is a top View of the same; Fig. 3, a transverse section, andFig.4, a horizontal section taken so as to show the recess of the chair bed.4

The nature of my invention consists in an arrangement and application ofcertain bearings to the base plate of a railway chair, provided with anelastic rubber bearing or its equivalent and a metallic cap piece.

The best mode of carrying out my inven tion as now known to me I willnow proceed to'explain.

In the drawings, A, and B, represent the rails, while C, denotes theirsupporting chair. Within the base part a, of the said chair a deeprecess D, is made, the same being formed therein so as to leave bearingsb, b, at each end of it and projecting above its bottom as shown inFig 1. Within this.

recess an elastic sheet or plate E, of vulcanized rubber, felt, or othersuitable material is placed and on the same there is arranged a metalliccap plate F, formed to fit the recess and to play easily in a verticaldirection therein. This cap plate should extend above the upper surfacesof the bearings 19, b, a distance equal to that to which the elasticrubber bearing E, may be safely compressed without injury to its elasticproperty in order that when the rails may be pressed downward withsufficient force by a weight bearing thereon, they may be caused todescend and bear upon the bearings, 19, b. By applying the elasticbearing within a recess encompassing it around its edges, and being ofcorresponding size with it or thereabout, it will be prevented frombeing extended longitudinally and so compressed at its middle as notonly to be broken apart, but to have its elasticity destroyed ormaterially reduced.

My invention may be said to be an improvement on that which constitutesthe subject of the United States Patent No. 15,036, in which the elasticbearing and its cover plate extend the whole length of the chair and arenot inserted in a recess or provided with rail bearings independent ofthe cap plate andextending upward from the base of the chair.

It has been found in practice that when the said bearing and its coverplate are not placed between the rail bearings or in a recess formed inthe bed of the chair the elastic bearing will be soon compressed andinjured and frequently is found to be torn apart directly under thejoint of the rails. My improvement completely obviates this difficulty,for after the elastic bearing, by a load acting on the rails, may havebeen compressed to the limit beyond which it would be unsafe to go, itsfurther compression will be impossible, by the rails being pressed downupon the bearings 79, 6. Thus it will be seen that the said bearingsoperate as a means of preventing a too great compression of the elasticbearing or one calculated to impair its elasticity or otherwisematerially injure it. The intention of the elastic bearing is to preventthe ends of the rails at the joint from being broken down or spreadoutward. It is advantageous also in other respects so long as itselasticity is not destroyed. It becomes, therefore, of great importanceto maintain the elastic power intact, and that it should be sufficientto prevent as far as possible the injurious effects of the downwardpressure of the wheels or thalt of concussion due to percussion on therai s.

When the elastic bearing and its cap plate are placed in a correspondingrecess formed in the bed plate and inclosing the entire outer edges ofboth the elastic bearing is better supported and protected than in anyother way of applying it. It may be otherwise applied, however, so longas the rail bearers are arranged with respect to it and the cap platesubstantially as specified.

I do not claim covering the india rubber or elastic bearing with ametallic cap so constructed applied to the chair as to be; free tovibrate 'or'play up and down in a vertical'direction as such is thesubject of the patent hereinbefore mentioned, but

What I do claim is lVIy improvement thereon or the arrangement'andapplication of rail bearers b, b,

with respect to the elastic bearing E,- its cap 10 plate F, the baseplate a, and under the rails A, B, of the railway chair substantially asdescribed, and particularly with the elastic bearing and cap platearranged and protected by a recess essentially as explained.

In testimony whereof I have hereunto set my signature.

J. F. PEABODY. Witnesses:

EDDY, i F. R. HALE, Jr. 'i

